[Objective]we checked the role of various proportion of three growth promoting bacteria to determine the optimum proportion with greater symbiosis in cucumber seedlings. [Method]Three strains of Rhodopseudomonas palus...[Objective]we checked the role of various proportion of three growth promoting bacteria to determine the optimum proportion with greater symbiosis in cucumber seedlings. [Method]Three strains of Rhodopseudomonas palustrisSH2,Bacillus megateriumSHⅡ3,Bacillus mucilaginosusSH1 were applied in this study. Cucumber were cultured in plastic pot,inoculating mixture with seven different proportion for 28 days. [Result]2:1:2 treatment had the strongest effect on N,P,K uptake and concentrations in the soils,on increasing enrich of Fe and Zn inroots and shoots and on plant height,stem diameter,dry weight,relative chlorophyll contents. Treatments of 1:1:2 and 1:1:1 were following ,while the weakest effect was given by 1:2:2,2:2:1 and 1:2:1 treatments. [Conclusion]2:1:2 is the optimum proportion of the three bacteria for nutrition uptake and growth of cucumber seedlings.展开更多
【背景】油藏环境中呈单相液态的原油,在开采、运送的过程中由于温度、压力及流动条件的变化,石蜡不断从原油中析出,造成井筒、管线的结蜡。微生物清防蜡作为一项新兴的技术,受到广泛的关注,但是需要根据现场的环境条件施用合适的微生...【背景】油藏环境中呈单相液态的原油,在开采、运送的过程中由于温度、压力及流动条件的变化,石蜡不断从原油中析出,造成井筒、管线的结蜡。微生物清防蜡作为一项新兴的技术,受到广泛的关注,但是需要根据现场的环境条件施用合适的微生物清防蜡菌液。【目的】利用来源于青海油田盐碱油藏环境的混合菌系QZ-10,有效解决油井结蜡的问题并探究作用机理。【方法】针对混合菌系QZ-10开展表面张力/界面张力测定、乳化性能分析、降黏率和防蜡率测定、烃转化能力评估,来表征其性能特征,同时开展现场试验验证其实际清防蜡应用价值。【结果】混合菌系QZ-10菌液能将水-煤油界面张力降至1.21 m N/m,EI_(24)值为91.11%,降黏率达92.90%,防蜡率可达到90.00%,并且能够减少原油中的重质烃类、增加轻质烃组分、改善原油的品质。室内实验结果表明QZ-10菌液具有良好的降黏和乳化性能,展现出能够清除油井结蜡的潜力。选取青海油田中结蜡严重的油井,利用QZ-10菌液进行清防蜡作业,经过140 d的现场试验,结果显示试验的油井中80.95%油井除蜡效果明显,其中多口油井有显著增油效果,累计增油1100 t。【结论】混合菌系QZ-10具有优良的油井清防蜡及驱油效果,应用前景广阔。展开更多
文摘[Objective]we checked the role of various proportion of three growth promoting bacteria to determine the optimum proportion with greater symbiosis in cucumber seedlings. [Method]Three strains of Rhodopseudomonas palustrisSH2,Bacillus megateriumSHⅡ3,Bacillus mucilaginosusSH1 were applied in this study. Cucumber were cultured in plastic pot,inoculating mixture with seven different proportion for 28 days. [Result]2:1:2 treatment had the strongest effect on N,P,K uptake and concentrations in the soils,on increasing enrich of Fe and Zn inroots and shoots and on plant height,stem diameter,dry weight,relative chlorophyll contents. Treatments of 1:1:2 and 1:1:1 were following ,while the weakest effect was given by 1:2:2,2:2:1 and 1:2:1 treatments. [Conclusion]2:1:2 is the optimum proportion of the three bacteria for nutrition uptake and growth of cucumber seedlings.
文摘【背景】油藏环境中呈单相液态的原油,在开采、运送的过程中由于温度、压力及流动条件的变化,石蜡不断从原油中析出,造成井筒、管线的结蜡。微生物清防蜡作为一项新兴的技术,受到广泛的关注,但是需要根据现场的环境条件施用合适的微生物清防蜡菌液。【目的】利用来源于青海油田盐碱油藏环境的混合菌系QZ-10,有效解决油井结蜡的问题并探究作用机理。【方法】针对混合菌系QZ-10开展表面张力/界面张力测定、乳化性能分析、降黏率和防蜡率测定、烃转化能力评估,来表征其性能特征,同时开展现场试验验证其实际清防蜡应用价值。【结果】混合菌系QZ-10菌液能将水-煤油界面张力降至1.21 m N/m,EI_(24)值为91.11%,降黏率达92.90%,防蜡率可达到90.00%,并且能够减少原油中的重质烃类、增加轻质烃组分、改善原油的品质。室内实验结果表明QZ-10菌液具有良好的降黏和乳化性能,展现出能够清除油井结蜡的潜力。选取青海油田中结蜡严重的油井,利用QZ-10菌液进行清防蜡作业,经过140 d的现场试验,结果显示试验的油井中80.95%油井除蜡效果明显,其中多口油井有显著增油效果,累计增油1100 t。【结论】混合菌系QZ-10具有优良的油井清防蜡及驱油效果,应用前景广阔。
